I know people who have made the change from teacher to lawyer. There are no special requirements, just those that apply to all law school applicants. You won't need a second bachelor's degree. Any BA/BS will do as long as its from an accredited college.
You will need to take the LSAT, and admissions will be based almost entirely on your GPA and LSAT score.
I went into the education field sure that I was going to touch the lives of others and after 5 years of living in poverty and working 60+ hours a week to fulfill all my daily work requirements to benefit the lives of a population that does not care, I have realized that this is not a reality. If I am going to put in the hard work, and sacrifices my family has had to make, I would like to get something in return. Teaching offers nothing but negative comments in return for all your hard work.
Your first few years out of law school won't be very different, except that you may work longer than 60 hours. Seriously, check into the legal job market before you commit to this.
As far as CA vs AZ law schools, pick where you want to live after graduation and focus on law schools in that state. The bar exams are not reciprocal between these states, and it's easier to find employment in the state in which you go law school.